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Download Fleasion

Free, open-source, and made by us. Change how your Roblox looks and sounds — right on your own PC.

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Free — no adsOpen-source (GPL-3.0)Cosmetic asset swapsWindows · macOS · Linux

Get Fleasion

Choose your system

Every build is published right here on the official Fleasion site — pick the one that matches your computer. No account, and no Python needed. (It's also mirrored on our open-source GitHub.)

01
Windows Windows 10 & 11

Grab Fleasion-v2.4.0-Windows.exe — portable, no installer. Env Proxy runs as your normal user.

Download
02
macOS Intel & Apple Silicon

Grab Fleasion-v2.4.0-MacOS-Universal.zip. Froststrap and AppleBlox launch paths are supported.

Download
03
Linux via Sober

Grab Fleasion-v2.4.0-Linux, make it executable, and use it with Sober.

Download

This official site is the home of Fleasion — download it here first. Our open-source GitHub is the only other official source. Fake "Fleasion" downloads, phone APKs and "premium" copies are malware — there's no mobile app and no paid version. How to stay safe →

After you download

Up and running in five steps

The whole thing takes about five minutes. No installer, no setup wizard.

  1. Download it

    Grab the build for your system right here on the official site (it's also mirrored on our open-source GitHub).

  2. Run it normally

    Env Proxy is the v2.4.0 default and does not need administrator rights. A Windows SmartScreen "unknown publisher" prompt is normal: More info → Run anyway.

  3. Complete the one-time setup

    First launch patches Roblox's own CA bundle for the local TLS proxy, then tucks Fleasion into your system tray. Right-click the tray icon to reopen the Dashboard.

  4. Launch Roblox through Fleasion

    Use the Roblox Player button inside Fleasion, then pick your game — that's what routes your changes through it.

  5. Add a swap, then clear the cache

    Make a change in the Replacer, then clear the Roblox cache or restart Roblox so it shows up. This is the step people miss most.

Hit an error? Our full install guide fixes the DLL error, the "critical settings" error, macOS & Linux setup, and how to uninstall. New to it all? Start with how to use Fleasion.

No catch

What you're getting

FreeNo ads, no paywall, no locked features.
Open-sourceGPL-3.0 — read or build the code yourself.
TransparentCosmetic swaps; FastFlags and Proxy tools carry separate warnings.
Actively updatedNew builds ship regularly.
The current release is v2.4.0. Read the technical update, see the full changelog, or verify the files on our open-source GitHub release.
Questions

Download FAQ

Is Fleasion free?

Yes — completely. It's free and open-source under GPL-3.0, with no ads, no paywall and no locked features. Tipping on Ko-fi is optional.

Which file do I download?

For v2.4.0: Fleasion-v2.4.0-Windows.exe, Fleasion-v2.4.0-MacOS-Universal.zip, or Fleasion-v2.4.0-Linux for Sober. They're all right here and on the official GitHub release.

Is the download safe?

The genuine build from the official Fleasion site (or our open-source GitHub) is safe — anyone can read exactly what it does. The malware scares come from fake copies on mirror and "cracked" sites. Only download from the official site or our GitHub. More on safety →

Do I need Python?

No. The standalone builds include everything. Python is only for people who want to build it from source.

Is there a mobile or APK version?

No. Fleasion is desktop-only, and any "Fleasion APK" or phone app is fake. Here's why →

Why does Windows warn me?

SmartScreen shows an "unknown publisher" prompt because the app is small and unsigned — that's expected. Choose More info → Run anyway, but only if you got it from the official site or our GitHub.

Related: Full install guide · How to use Fleasion · Is Fleasion safe? · About the team